Is Teleportation Possible? Quantum Experiments, Wormholes and the Future of Human Travel

Teleportation: What Science Can Actually Move—and What It Cannot

Next Horizon | Science • Quantum Physics • Future Technology | Research and editorial review: October 2026

Imagine arriving on Mars without a rocket, crossing an ocean without boarding a plane, or stepping into a machine and emerging thousands of kilometers away. Teleportation has become such a familiar science-fiction idea that it is easy to forget how extraordinary it would be: not merely faster transportation, but a different relationship with distance itself.

Here is the twist. Physicists have already demonstrated teleportation. They have sent quantum states between particles, across optical fibers, between islands and even from Earth to an orbiting satellite. None of these experiments transported a person, a cup of coffee or even a single atom of matter from one place to another in the science-fiction sense. That distinction is the starting point for understanding what teleportation really means.

Teleportation is already real at the quantum level—but moving information between particles is very different from transporting a human being.

Three meanings of teleportation—and why confusing them matters

The first meaning is physical relocation: the same object somehow disappears at point A and appears at point B without crossing the intervening distance. No established experiment demonstrates this. The second is reconstruction: describe an object in sufficient detail, transmit a description, and assemble a counterpart elsewhere from available matter. This is an engineering and identity problem as much as a physics problem. The third is quantum teleportation: transfer the quantum state of a system to another system using entanglement and a conventional communication channel. Only this third meaning is a working laboratory technique.

Even “information transfer” needs careful wording. Quantum teleportation does not involve reading out the complete state of an unknown particle and emailing those measurements. Quantum mechanics prohibits that procedure in general. Instead, the protocol uses a shared entangled resource, a joint measurement and a small amount of classical information to reconstruct a state at the destination.

These definitions describe three different problems that fiction has compressed into one word. A shortcut through spacetime would preserve a traveler while changing the path. A reconstruction machine would move a description and create a physical successor. Quantum teleportation changes which system carries a particular quantum state. All three can look like the same visual effect on a screen, but an experiment supporting one says almost nothing about the feasibility of the other two.

This distinction matters beyond pedantry. Science advances by turning a dramatic question into smaller questions that can actually be tested. Instead of asking whether a human can vanish, we can ask whether an unknown state can be transferred, whether a physical channel can preserve entanglement, and whether matter can be assembled with biological precision. Each has a different answer—and a different frontier.

The breakthrough of 1993: teleporting a state, not a particle

In 1993 Charles Bennett and five colleagues published a protocol in Physical Review Letters showing how an unknown quantum state could be transferred between distant systems. Alice, who holds the state to be transferred, and Bob, at the destination, first share a pair of entangled particles. Alice performs a joint Bell-state measurement on her input and her half of that pair. She sends Bob the measurement result over an ordinary classical channel. Bob applies the corresponding correction to his particle; its resulting state matches the original input.

Two details are essential. First, the input state is not preserved as an independent perfect second copy: the protocol respects the no-cloning theorem. Second, Bob cannot complete the transfer before the classical message arrives. Entanglement is a resource, not a faster-than-light telephone. The popular image of particles “instantly telling each other what to do” is not how the usable communication works.

Consider a simple analogy: a secure, extraordinary kind of handoff where the instructions alone are insufficient, and the pre-shared quantum resource alone is insufficient. Both are necessary. The analogy helps, but should not be pushed too far: quantum states are not ordinary files, and quantum teleportation is not copying bits off a memory stick.

What makes Bennett's proposal remarkable is not that it offers a way around quantum mechanics. It uses the rules that initially seem to make teleportation impossible. A measurement cannot generally reveal an unknown quantum state from a single specimen; nevertheless, the protocol can transfer that state without learning its full description. In other words, the procedure is not a scanner but a controlled transfer of quantum correlations.

It also sharpens an old misunderstanding about the word 'instantaneous.' The correlations in an entangled pair can be observed across large separations, but Alice cannot choose a measurement outcome and use it to write a message on Bob's side. Until an ordinary signal arrives, Bob cannot tell which correction is needed. If teleportation were an escape hatch from light-speed limits, this detail would be a minor inconvenience. Instead, it is central to why the protocol is compatible with relativity.

Quantum teleportation transfers a quantum state rather than matter. Entanglement provides the quantum resource, while classical information is still required to complete the process.

What researchers have actually demonstrated

The historical sequence is remarkably concrete. Experiments in the late 1990s established basic photonic teleportation. By 2012 researchers teleported quantum states across 143 kilometers of free space between two Canary Islands, including the classical feed-forward needed to finish the procedure. In 2017 the Micius satellite experiments reported teleporting single-photon qubit states from a ground station to low Earth orbit across distances reaching about 1,400 kilometers. The reported average state fidelity was 0.80 ± 0.01—an important result, but not a claim of perfect, lossless transmission.

Distance is an impressive number, but not the only useful measure. A 143-kilometer atmospheric link must contend with beam spreading, changing turbulence and tiny probabilities of detecting the right photons. A successful demonstration means the protocol retained recognizable quantum information under those conditions; it does not imply a continuous high-bandwidth conveyor belt for arbitrary objects. Progress in teleportation therefore has two scoreboards: how far an experiment reaches, and how dependably it works.

In December 2024 a Northwestern-led team reported quantum teleportation through a 30-kilometer fiber carrying conventional high-speed Internet traffic. Their main innovation was avoiding noise from much brighter classical optical signals by choosing suitable wavelengths and filtering. The achievement matters because future quantum networks may be able to coexist with existing fiber infrastructure rather than needing dedicated cables everywhere.

The Micius result is especially revealing. An uplink from Earth to orbit is technically punishing: the receiver is moving, the atmosphere distorts the beam and most photons never arrive. The experiment did not send material to the satellite. It showed that an entangled-resource-based protocol can operate over a planetary-scale optical link, with measured fidelity above an appropriate classical benchmark. What seems like a spectacular version of science fiction is actually a painstaking engineering victory over photon loss.

The 2024 fiber result highlights a different sort of progress. Commercial networking infrastructure carries enormously brighter optical signals than fragile quantum channels. Making both coexist addresses the boring-looking obstacle that often determines whether a laboratory discovery leaves the laboratory. A global quantum network will depend less on one dramatic distance record than on thousands of such practical compromises.

Recent work also extends teleportation into quantum computing. A 2026 Nature Communications paper reported modular logical-state teleportation between error-detecting codes on a trapped-ion processor, without mid-circuit measurements during the algorithm. Logical qubits encode information across multiple physical qubits to resist errors. This is not a leap toward teleporting people; it is progress toward more reliable modular quantum machines.

These milestones answer a real question: can quantum information be transferred from one physical carrier to another using an entangled link? Yes. They do not answer the different question: can an arbitrary macroscopic object be scanned and rematerialized?

The 2026 trapped-ion work pushes the idea further: teleportation becomes an internal operation in a computer rather than a journey across a map. Its experimental protocols moved encoded logical information between registers without mid-circuit measurements, using coherent operations and auxiliary systems. That qualification is important. It does not overturn the requirement for classical communication in the standard distant-party teleportation protocol; this is a different, locally implemented circuit architecture.

A separate 2026 result reported a teleported quantum logic gate between remote diamond-based qubit registers, with real-time feed-forward rather than relying only on a favorable subset of outcomes. The headline achievement is not distance traveled by a physical object. It is the ability to make two separated computing nodes participate in one operation. This is perhaps the most useful redefinition of 'being somewhere else': information can become operational at a remote processor without shipping the entire processor.

The Micius experiments demonstrated quantum teleportation from Earth to low Earth orbit over distances reaching roughly 1,400 kilometers—without transporting matter or enabling faster-than-light communication.

Why teleporting a human is a completely different problem

A human body contains on the order of 10^28 atoms (the precise count depends on body composition). Even describing the positions, chemical bonds and changing biological states of that enormous system would be fantastically demanding. But the deepest obstacle is not simply a large storage drive. It is the difference between measuring classical features and obtaining an exact unknown quantum state.

Quantum systems cannot generally be measured in full from one single specimen without altering the state. The no-cloning theorem blocks perfect copying of an arbitrary unknown quantum state. Human bodies are warm, wet, continually interacting systems; quantum coherence across all their degrees of freedom is not something a plausible scanner could preserve. Meanwhile, the brain is not a static wiring diagram. Electrical activity, molecular processes, memories and continual biological changes would all matter for any serious proposal to reconstruct the same functioning person.

The number of atoms is so large that it tempts us to respond with a science-fiction-sized hard drive. But scale is only one difficulty. At the atomic level, a body is not a frozen sculpture; molecules collide, react, fold and exchange energy with their surroundings. The choice of what to preserve already contains a scientific assumption about what makes the reconstructed body functionally the same. Do we need every molecular vibration? Every ion concentration? Every transient synaptic event? We do not have an experimentally justified minimum specification for rebuilding one particular person's living brain.

There is also the destination. Quantum teleportation uses physical matter that is already at the receiving end. A hypothetical molecular reconstruction machine would likewise need raw material, energy, fabrication capabilities and extraordinary error control. Reassembling a living brain atom by atom is not merely advanced 3D printing. Small mistakes might be biologically catastrophic, and there is no demonstrated manufacturing path to that level of control.

A common back-of-the-envelope argument says: simply digitize the entire human body and send the data. The problem is that no uniquely justified number of “bits required to describe a person” exists. The answer changes radically depending on whether the model captures anatomy, molecular structure or a full quantum state. Specific astronomical bit counts circulated online should therefore be treated as speculative assumptions, not measured engineering requirements.

Consider the difference between scanning a book and recreating a forest. A book contains a relatively stable symbolic sequence; if the ink changes but the words remain, the text survives. A brain is a living process whose structure and activity continuously influence each other. Its information cannot simply be separated from matter in the same effortless way that a PDF can be separated from paper. Even an ideal future medical reconstruction method would not automatically answer whether it had captured everything relevant to memory, personality and awareness.

There is a more mundane risk hiding behind the grand idea. Suppose a reconstruction system achieves an error rate that sounds impossibly good—one mistake in a billion operations. A vast, multi-scale biological assembly might still accumulate errors in sensitive locations. Without an actual model of the architecture and its error correction, it is impossible to translate a spectacular percentage into a guarantee that the traveler will wake up unharmed.

Would the person who arrives still be you?

Suppose technology eventually makes a perfect biological reconstruction. The replica remembers your childhood, knows your friends and insists it is you. If the original person survives, however, there are now two individuals with equally strong claims of continuity. If the original is destroyed, the puzzle becomes harder rather than easier: has personal identity moved, or has one life ended while another begins?

Science can investigate physical continuity, neural function and behavioral similarity. Whether subjective first-person experience survives destructive reconstruction is not presently an experimentally settled question. The debate intersects philosophy of mind, theories of consciousness and thought experiments about personal identity. It should not be confused with a demonstrated physical prohibition: we do not yet possess the technology needed to test the scenario in the first place.

One philosophical tradition emphasizes psychological continuity: if the memories, intentions and character survive, that may be what matters. Another puts weight on bodily or biological continuity, and asks whether a newly manufactured organism could literally be the same individual. Neither position can be decided by a sufficiently realistic computer animation of someone disappearing. The disagreement is about the criterion of identity, not only about how accurately a machine reproduces tissue.

The duplication case is unusually instructive. If one source produces two indistinguishable people, both cannot straightforwardly be numerically identical to the one original person while also being distinct from each other. Yet each might sincerely report a continuous personal history. The lesson is not that teleported people are necessarily 'soulless copies'; it is that first-person testimony and third-person similarity do not by themselves settle the question of one-to-one identity.

What about wormholes—shortcuts through spacetime?

General relativity allows mathematicians to study geometries in which distant regions of spacetime are connected by a throat, popularly called a wormhole. The 1935 Einstein–Rosen bridge is a landmark in that history, but it is not a practical traversable tunnel. Theoretical traversable wormholes typically require unusual stress-energy conditions, often described in terms of negative energy or violations of familiar energy conditions. Quantum field theory permits certain local negative-energy effects, but that does not establish that a human-sized stable wormhole can be built.

Wormholes would also not automatically mean breaking physics by moving locally faster than light. A traveler might take a shorter route through a nontrivial geometry while remaining subluminal along that route. Whether physically achievable geometries can support such travel, and how their stability and causality could work, are unresolved questions. No astronomical observation has confirmed a traversable wormhole.

In 2022 a team used Google’s Sycamore quantum processor to explore dynamics mathematically analogous to a traversable wormhole in a simplified theoretical model. Headlines sometimes made it sound as though researchers had opened a portal. They had not. Their work investigated a relationship between quantum information and models of gravity through a carefully engineered quantum system. The team and Caltech explicitly distinguished the simulation from the creation of an actual spacetime tunnel.

A wormhole changes the premise entirely. Instead of encoding a traveler into a message, it imagines altering the geometry of the journey. A map offers a useful analogy: two distant points on a flat sheet can be brought close together by folding it. In relativity, however, the sheet is only a teaching image. Actual spacetime geometry has to satisfy Einstein's equations with some physically permitted distribution of energy and momentum.

That is where the attractive picture collides with difficult physics. A mathematical spacetime can be described without proving that nature can produce, stabilize or traverse it. Negative-energy effects in quantum field theory are real in restricted settings, but that does not give us a warehouse of exotic material suitable for holding open a human-scale passage. Even a plausible solution on paper would leave questions about formation, stability, radiation, tidal forces and causality.

The quantum-computer 'wormhole' story is a useful case study in how scientific metaphors become misleading headlines. The researchers implemented a small quantum system whose dynamics were interpreted through a specific theoretical correspondence. No hole appeared in the laboratory floor; no signal traveled through an actual tunnel in our universe. Yet reducing the experiment to 'just a simulation' would miss its real purpose: exploring whether patterns predicted by quantum-gravity ideas can be probed in controlled quantum systems.

General relativity allows mathematical geometries resembling shortcuts through spacetime. Traversable wormholes, however, remain theoretical: none has been observed or engineered.

ER = EPR: could entanglement and geometry be connected?

In 2013 Juan Maldacena and Leonard Susskind proposed the influential ER=EPR conjecture, relating Einstein–Rosen bridges to Einstein–Podolsky–Rosen entanglement in particular theoretical settings. The idea is profound: spacetime geometry and quantum correlations may be two descriptions of related underlying physics. But it is not an engineering manual for building portals, nor proof that any pair of entangled photons contains a traversable human-scale tunnel.

The more restrained—and scientifically exciting—possibility is that experiments in quantum information may help test ideas about quantum gravity. That is a genuine research program, even if the science-fiction interpretation remains speculative.

ER=EPR also deserves a careful reading. The proposal suggests that some kinds of entanglement and certain geometric connections may be related in a deeper description of gravity. The word 'some' does serious work here. The correspondence is motivated by particular theoretical constructions, not by a demonstration that a pair of laboratory photons creates a macroscopic bridge through which we could pass a probe.

Still, the conceptual shift is enormous. In daily life, space seems fundamental and information seems like something stored inside it. Some approaches to quantum gravity invert that intuition: perhaps patterns of entanglement help explain why spacetime has the structure it does. If that direction proves fruitful, teleportation research could teach us something about the architecture of reality even if it never moves a passenger.

Could new physics change the answer?

It would be premature to declare every conceivable form of matter teleportation forever impossible. Physics has surprised us before. Still, “not ruled out in all imaginable future theories” is not the same as “technically feasible.” Any proposed breakthrough would need to account for relativity, quantum measurement, thermodynamics, error correction, living-system integrity and energy requirements. It would also need an experimentally testable mechanism rather than a metaphor about converting matter into energy.

Three plausible research directions are worth watching: quantum repeaters and long-distance networks that distribute entanglement reliably; modular quantum processors that move quantum states between memory and computing units; and theoretical work on gravity, entanglement and the structure of spacetime. None offers a credible timeline for passenger teleportation. Their value is substantial without that promise.

A useful test for futuristic claims is to ask what new mechanism is being offered. 'Convert a human into energy' is not a mechanism: energy is a property of physical systems, not a magical alternate storage format in which a personal identity can travel without constraints. 'Transmit the atoms' raises a transport problem; 'transmit the complete description' raises a measurement-and-reconstruction problem; 'bend space' raises a general-relativistic engineering problem. A credible proposal must specify which problem it solves and which known physical limits it respects or revises.

The future may be less cinematic—and more useful

A quantum internet would not make websites load instantaneously. Instead, it could link quantum processors, support specialized cryptographic and sensing tasks, and enable distributed quantum protocols that classical networking cannot reproduce directly. Some applications would require high-quality entanglement, quantum memories and repeaters, with considerable losses and engineering challenges still to overcome.

The comparison with interstellar travel is instructive. A voyage toward Alpha Centauri faces propulsion, shielding and enormous time scales; teleportation in the science-fiction sense would face a different and arguably deeper collection of barriers. And in the fictional universe of Star Trek, the transporter is more than a convenient elevator—it is a machine that quietly raises one of the hardest questions in philosophy: what makes a person the same person over time?

There is an irony in this future. The first transformative use of teleportation may be almost invisible to ordinary people. We may not see anyone step into a chamber, but we might use services enabled by remote quantum processors, specialized sensors or networks that link delicate quantum devices. It would resemble many technological revolutions: what arrives first is not the cinematic dream, but the infrastructure that quietly changes what is possible.

Further reading: Alpha Centauri: Our First Step Beyond the Solar System

Further reading: Will the Future of Star Wars Become Our Reality?

Teleportation research is far more likely to transform communication than transportation first, helping connect quantum computers, photonic networks and future quantum infrastructure.

So, is teleportation possible?

Yes—if we mean the transfer of quantum states, an achievement already backed by decades of experiments. Not with any known technology—if we mean transporting a person, disappearing in one room and appearing intact in another. Wormholes belong to serious theoretical physics, but traversable portals have neither been observed nor engineered. The correct answer is therefore neither the easy “of course” of science fiction nor a confident “never.” It is a boundary line between something nature demonstrably permits and something we do not know how to achieve.

Perhaps the most interesting outcome is that teleportation research may transform communication long before it transforms travel. The machines we build might never transport a human body across space. They may still reveal why space, information and physical reality are connected in ways we are only beginning to understand.

The cautious answer should not be mistaken for a lack of imagination. Modern physics has made real a type of teleportation that would once have sounded internally contradictory: an unknown quantum state can be transferred without measuring a complete classical blueprint and without creating an independent perfect copy. That is already extraordinary. The discipline is in refusing to promote an extraordinary fact into an unrelated promise.

Frequently asked questions

Perhaps the deepest question is not whether the universe allows shortcuts, but what we think we are trying to preserve when we ask to be transported. Our bodies replace molecules over time; memories change as they are recalled; identity persists through sleep and gradual biological change. A hypothetical transporter compresses those familiar mysteries into a single dramatic instant. Even if humanity never builds one, asking how it would work forces us to distinguish a person's location, physical organization, history and subjective experience. That is a surprisingly substantial return from a question that began with a science-fiction special effect.

Has a human ever been teleported?

No. Verified experiments teleport quantum states, not people or bulk matter.

Does quantum teleportation happen faster than light?

No. Successful usable teleportation requires classical communication, which cannot exceed the speed of light.

Could we teleport an atom?

Researchers can teleport the quantum states associated with atomic or trapped-ion systems. That should not be confused with moving the atom’s matter to a distant location.

Did scientists create a wormhole on a quantum computer?

No. Experiments investigated dynamics analogous to theoretical wormhole models; they did not create a physical tunnel through spacetime.

Will there be teleportation machines by 2050?

There is no evidence-based timetable for human teleportation. Continued progress in quantum networking is much more plausible than passenger transport.